Boone, 48, will be responsible for new and existing client growth, the agency said in a statement, and will help “to define and articulate the agency’s positioning, capabilities, development, and growth agenda.”

She previously worked at Doner as a senior vice president and group account director on Mazda from 2007-09.

As CMO, she replaces James Ward, who was promoted to chief strategy and integration officer in December.

Boone will report to co-CEO and President David DeMuth.

“Liz understands how to help brands tell relevant and compelling stories in today’s always-on marketing landscape,” DeMuth said in a statement. “Her experience and skills are ideal for this position, enabling us to further build our digital capabilities and raise our profile, as well as that of our clients, through proprietary content.”

Most recently, Boone was a vice president at San Francisco-based Federated Media PublishingLLC. She also worked for General Motors Co. as global director of digital and social engagements.